Silo-roof construction.



G. S. DUFHN.

S| L0 ROOF CONSTRUCTION. APPLICATION FILED new), 1913.

1,16L1 15a Patented Nov. 23, 1915.

-.-. '..ummA PLANDGRAPH 60.,WA5NINOTON. D. c.

G. S. DUFFIN.

SILO ROOF CONSTRUCTION.

APPLICATION man 0cm]. 1913.

1 ,1 61, 1 1 5. I Patented Nov. 23, 1915.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH 60.. WASHINGTON. D. C.

site-R001 CONSTRUCTION.

To all whom it may concern: Be it known that L GE'ORGE S ,DUFFIN, a.citizen of the United States, residing at Hoopeston, inthe county ofVermilion and State of Illinois, have invented certain new and usefulImprovements in Silo Roof Construction, '01 which the following is aspecification.

This invention relates to improvements in silo root constructions ofthat class wherein interlocking metal roof sections of radiallyconverging form are provided to extend from the silo wall to a centerconnecting radiating ribs 7 which able spaced relation and whichconverge or structure.

The novelfeature'of this IHVGIitlOIl consists in the mounting of theroof sections on the silo wall, atthe outer ends of said sections, andthe provision of [an improved form of center structure for p with theinner endsfof the root sectionsi The roof sectionsare connected "at.their outerends with the'silo wall at any desired inclination andare'not onlylieldin position by their wall supports but they are alsolocked against their upwardand downward movement, and a further-featureconsists in centrally weighting theroot against upward movement underwind pressure.

An object ofthe center connecting structure is to connect "the innerreduced ends of theroofsections invan effective watershedding manner,a'ndfso as to effectively engage the same above'and below to render theroof structureas rigid 'as possible.

"Other objectsand featuresof the invention will be more fully describedin conned tion with the flaccompany ng drawings, and, will be moreparticularly pointed out in and by the appendedclainis.

In the drawingsi Figure is a plan view of a silo roof constructionembodying one form of my invention; Fig. 2'is a sectional view on line2+2 of Fig. 1. Fig. 3 is'a.

sectional view on line 3+3 OfFigLQlOO'king in the direction of thearrow. Ifigidl; is a perspective view ofone root'sectionand an improvedwall bracket.support therefor,

.with the bracket showndetached from its section. Fig.- 5 is a plan viewof the center connecting structure withfjpartsbroken away for clearness'of illustration. F ig.]6 is aplan view of a portion of the roofsectionfadpce' vided with a door opening.

Like characters of? reference designate" end 5 to its inner end 6connection to form a female locking member.

t that portion thereof pro I p v p p i provide for relative movement tothe lock-1 ing elements 16 upon shrinkage of the wall Specification ofLetters Patent. Patented Nov. 23, 1915. Application filed October 9,1913. Serial No. 794,245. W

-11M1i11s r 1 similar parts throughout theydilferent figsilo wall ofcylindrical form having a flat top 2, the outer corner 3'thereot'formingfa roof supporting portion, as will hereinafter more fullyappear. Theroof shown is composed of sheet metal and is made up of aplurali-tyof sections similar to that shown. in Fig. 4, and which isdesignated as a whole" at 4. The section t converges from its outer andthel body portion is bent to form longitudinally disposed are disposedin suitradiate from the center of the roof as will be seen by referenceto Fig. 1. One side margin, designated at'S, is turned upwardly to forma longitudinal male'locking member aiidthe remaining side 9, is turnedupwardly and then downwardly upon itself sectionswill besodisposed inmaking up The I.

the roof as to provide for interlock ing 'themale member of one sectionwith thelfeinale member of the next adjacent section and it will be seenthat when f the sections are locked the femjale me nber' will presentthe general appearance of one of the ribs 7 so as notto break thecontinu- -ity ofappearance ."Neartheir outer ends,

the sections are provided with inner locking or fastening openings 10the disposition of the sections longi tudie. nally',1'with respect tothe silo wall '1, being I and outer openings l1,\\1th respectto thesides of the sections,

such as to dispose said'openings inwardly of the wall, aswill be seen byreference to Fig.2. I a

i The supporting meansfor the roof sec tions comprise brackets,designated as a whole at 12. Referring more particularly to Fig. {l,,itwillfbe seen that the bracket conform to the curvature "ofthe silo wall'1,

fcomprisesi'a side wall13,fwhich is curvedto so asltoflie in abuttingrelation against theW inner 'face thereof. Prongsi are struclc up fromthewall 13 so as to dispose their point'siiipwardly. Near its lower m gthe wall l8 is provided with elongated openings 15, adapted to receivesupporting projections 16. adapted to be driven into the wall 1, theelongations of; the openings 15 1. It will be seen that whenthe prongs14 are driven into the wall 1,'they will serve effectively to lock thebracket againstany upward movement from. its position of anchorage withthe wall 1. The locking elements 16 will serve to lock the bracketeither movement tionwith the upper angularly disposed sup bracket arestruck porting wall, as will be seen by reference to Fig.

1 projected through the openings and sub,-

the lower sequently bent over as shown in Fig. 3 upon the top face ofthe roof section. The end weightlng the central structure to preventmargins of the bracket are bent inwardly, as indicated at 19, toformvertically disposed end bracket brace walls which are preferablyinclined from their wider upper ends so as to merge into the side wall13. The end walls 19 extend upwardly above the top ing projections 20adapted to 7 project through openings 11 and be turned downwardly asshown in fFig.,3 uponr the top face of the roof Semen,

It will. be seen byreference 2that face of-the roof section will bedisposed at. an angle with respect to thehorilocked, and.at spacedrelation zontal top tions will be seen that the roof secsupport upon thep I with respect to the wall "1, the roof sections. being v supportedonthe wall 1, of the silo-thereby most 4 elfectivelyserving to anchor theroof sec-1 tions in position,

Referring to theicenter connecting struc ture with whlch the inner endsofthe Qroof sections are connected, '21 designates a base for the[center structure having a central I wardly inclined margin 22.,

engaged at their inner ends by upper and lowerfcenter members whichdiverge outwardly, oneof the "ce'ntenmembers, which in the presentconstructionisthe lower center 2.' In the supporting wall 17 of the upfrom the'body one or more fastening lugs 18, .adapted tobe supportingwall 17 to form fasten- 20f the wall 1, andthat theisec lie insupporting relation with the outer supporting margin 3 of the wall '1'.It will thus tionshave a relatively extensive abutting wall17 on'whichthey are horizontally disposed portion a; a down;

Between the cap, and

spacing member 24k which may be tubular in 'form and which is providedwith locking extensions 25 and 26 adapted to be projectedthroughopenings in the cap and :base and bent into locking relationtherewith, as will be clearly seen by reference to Fig. 2. The

tubular member will hold the center structure, consisting of the cap andbase, in assembledrelation but 1n order to snugly en' :gage the partswith each other, I provide meanswhioh maybe in the form of a bolt 27havinganut 28 whereby the cap and base v may be securely fastened toprevent rattlingp of the roof structure under the action of a v heavywind. I i I a 7 I advantageously provlde means for .rais'ng off of theroof at the center under a heavy wind action; As shown, I have at tacheda ring 32 to'the bolt 27 and provide an S7hookg33 whereon a, suitableweight .34

weightg It will bereadily seen that by the imposition ofa weight on thecenter structure, the .samewill not only be looked more 7 firmlyrthereat, and also on the silo wall bracket,but thewhole structure willbeprovidedwith means normally resisting any tendency of the wind to'lift theroof off from thesilo. I j n In order, to provide for a trap orlike door opening in the roof structure, a rsp'ecial roof section 29 isprovided. which extendspout- I wardly from the center structure towardthe wall. 1, but not overthe same. The margins ofthe roof sectionsa'djacent the ro'of opening, areboth bent upwardly to provide malelocking portions 8, the partial. sectionf29 i is provided on both sideswith female lock-' ing portions ,30 A hinge rod35 may be ee cured.tofthejfiangesf8,.as shown in Fig; 6, on

which a trap door indicated dotted lines,

-may be "hingedfb'y' means of hinges 36. 1n 7 order to limit movement Iof the v swinging Qdoo'r inwardly, I may provide a, swinging stop 31 onthe section 29', as shown.

While'I have hereinfshown' and described I? onespecifie form of mvinvention, I do not wish to ee, limited thereto, except for "suchl1m1ta'tions-as the claims may import.

- I claintifz+f- 1.1111 a silo, a

tions having o'uterends overhanging said thereofv and provided with'ffastening, openg mgs, bracket supportsfor'said wall sections sertioninto the i 7, wall having a horiz'ontalfff top," aninclinedroofcomprisingroofsed I e 1'25 'wallfand engaging theouter corner or edge ra to lock the bracket supports thereagainst from any upward movement,said bracket supports having openings and the silo wall havingprojections loosely engaging said openings to compensate for shrinkageand to lock the bracketsupports against either up or down movement, andfastening projections on said bracket supports extended through the Iopenings in said roof sections and being bent into locking engagementwith said sections to lock said sections in supporting relation withrespect to said supporting brackets and the silo wall.

2. In a silo, a wall, an inclined roof section having its outer endoverhanging said wall and supported thereby, a bracket support having asidewall secured to the inner face of the silo wall andvhaving its uppermargin inclined to abut and support said roof sections and provided withfastening means for locking the roof section upon said inclinedsupporting, wall, the end margins of the bracket side wall being bentinwardly to form brace walls and being projected upwardly in lockedrelation with said roof section thereby locking the latter upon saidbracket support and said silo wall.

In a silo, a wall, an inclined roof comprising a plurality of sectionsextending radially inwardly and centrally of the wall, a centerstructure forthe inner ends of said sections comprising a base having ahorizontal center portionand a downwardly inclined angular flangeengaging the lower faces of the inclined sections, a vertically disposedtubular spacing member on said base, a conical cap having its wallinclined less than the angle of inclination of said sections andoverlapping the inner ends of said sections, said cap and base havingopenings and said spacing member having fastening projections forengagement with said cap and base through said base and cap openings forlocking the parts of the center structure in rigid engagement withrespect to each other. i a 4. In a silo, a wall, an inclined roofcomprising a plurality of sections overhanging the wall and extendingradially inwardly therefrom, acenter structure comprising a base and capfor embracing the lower and upper faces of the inner ends of the roofsections, respectively, a spacing member disposed between said base andcap and in locked relation therewith, and means for tightening the capand base in rigid engagement against said spacing member, substantiallyas described.

I In testimony whereof I affix my signature in presence of twowitnesses.

- GEORGE S. DUFF IN. Witnesses:

J. H. Jones, CECIL YOUNG.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). C.

